<template>
    <div>
        <el-upload :action="uploadUrl" :before-upload="handleBeforeUpload" :on-success="handleUploadSuccess"
            :on-error="handleUploadError" name="file" :show-file-list="false" :headers="headers"
            class="editor-img-uploader" v-if="type == 'url'">
            <i ref="uploadRef" class="editor-img-uploader"></i>
        </el-upload>
    </div>
    <div class="editor">
        <QuillEditor ref="quillEditorRef" v-model:content="content" contentType="html" @textChange="change"
            :options="options" :style="styles" />
    </div>
</template>
<script lang="ts" setup>
import useMessage from '@/hooks/message'; 
import { upload } from '@/utils/request';
import { sys } from '@/utils/sys';
import { QuillEditor } from '@vueup/vue-quill';
import "@vueup/vue-quill/dist/vue-quill.snow.css"
import { computed, onMounted, ref, toRaw, watch } from 'vue';

const quillEditorRef = ref()
const uploadRef = ref()

const props = defineProps({
    /* 编辑器的内容 */
    modelValue: {
        type: String,
    },
    /* 高度 */
    height: {
        type: Number,
        default: null,
    },
    /* 最小高度 */
    minHeight: {
        type: Number,
        default: null,
    },
    /* 只读 */
    readOnly: {
        type: Boolean,
        default: false,
    },
    /* 上传文件大小限制(MB) */
    fileSize: {
        type: Number,
        default: 5,
    },
    /* 类型（base64格式、url格式） */
    type: {
        type: String,
        default: "url",
    }
})


const options = ref({
    theme: "snow",
    bounds: document.body,
    debug: "warn",
    modules: {
        // 工具栏配置
        toolbar: [
            ["bold", "italic", "underline", "strike"],      // 加粗 斜体 下划线 删除线
            ["blockquote", "code-block"],                   // 引用  代码块
            [{ list: "ordered" }, { list: "bullet" }],      // 有序、无序列表
            [{ indent: "-1" }, { indent: "+1" }],           // 缩进
            [{ size: ["small", false, "large", "huge"] }],  // 字体大小
            [{ header: [1, 2, 3, 4, 5, 6, false] }],        // 标题
            [{ color: [] }, { background: [] }],            // 字体颜色、字体背景颜色
            [{ align: [] }],                                // 对齐方式
            ["clean"],                                      // 清除文本格式
            ["link", "image", "video"]                      // 链接、图片、视频
        ],
    },
    placeholder: "请输入内容",
    readOnly: props.readOnly
})

const styles = computed(() => {
    let style: any = {}
    if (props.minHeight) {
        style.minHeight = `${props.minHeight}px`
    }
    if (props.height) {
        style.height = `${props.height}px`
    }
    return style
})

const content = ref('')
const uploadUrl = ref(import.meta.env.VITE_APP_BASE_API + "/common/upload") // 上传的图片服务器地址
const headers = ref({
    'X-Access-Token': sys.getAccessToken()
})

watch(() => props.modelValue, (v) => {
    if (v !== content.value) {
        content.value = v == undefined ? "<p></p>" : v
    }
}, { immediate: true })

const emit = defineEmits(['update:modelValue'])
watch(content, val => { emit('update:modelValue', val)})

// 如果设置了上传地址则自定义图片上传事件
onMounted(() => {
    if (props.type == 'url') {
        let quill = quillEditorRef.value.getQuill()
        let toolbar = quill.getModule("toolbar")
        toolbar.addHandler("image", (value) => {
            if (value) {
                uploadRef.value.click()
            } else {
                quill.format("image", false)
            }
        })
        quill.root.addEventListener('paste', handlePasteCapture, true)
    }
})
// 上传前校检格式和大小
function handleBeforeUpload(file) {
    const type = ["image/jpeg", "image/jpg", "image/png", "image/svg"]
    const isJPG = type.includes(file.type)
    //检验文件格式
    if (!isJPG) {
        useMessage.error(`图片格式错误!`)
        return false
    }
    // 校检文件大小
    if (props.fileSize) {
        const isLt = file.size / 1024 / 1024 < props.fileSize
        if (!isLt) {
            useMessage.error(`上传文件大小不能超过 ${props.fileSize} MB!`)
            return false
        }
    }
    return true
}

// 上传成功处理
function handleUploadSuccess(res) {
  // 如果上传成功
  if (res.code == 200) {
    // 获取富文本实例
    let quill = toRaw(quillEditorRef.value).getQuill()
    // 获取光标位置
    let length = quill.selection.savedRange.index
    // 插入图片，res.url为服务器返回的图片链接地址
    quill.insertEmbed(length, "image", import.meta.env.VITE_APP_BASE_API + res.filePath)
    // 调整光标到最后
    quill.setSelection(length + 1)
  } else {
    useMessage.error("图片插入失败")
  }
}

// 上传失败处理
function handleUploadError() {
  useMessage.error("图片插入失败")
}

// 复制粘贴图片处理
function handlePasteCapture(e) {
  const clipboard = e.clipboardData || navigator.clipboard
  if (clipboard && clipboard.items) {
    for (let i = 0; i < clipboard.items.length; i++) {
      const item = clipboard.items[i]
      if (item.type.indexOf('image') !== -1) {
        e.preventDefault()
        const file = item.getAsFile()
        insertImage(file)
      }
    }
  }
}
/** 插入图片 */
function insertImage(file) {
  upload('/common/upload',file, null).then((res:any) => {
     handleUploadSuccess(res.data)
  }) 
}


function change(){

}
 
</script>
 
<style  scoped>
.editor-img-uploader {
  display: none;
}
.editor, .ql-toolbar {
  white-space: pre-wrap !important;
  line-height: normal !important;
}
.quill-img {
  display: none;
}
.ql-snow .ql-tooltip[data-mode="link"]::before {
  content: "请输入链接地址:";
}
.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
  border-right: 0px;
  content: "保存";
  padding-right: 0px;
}
.ql-snow .ql-tooltip[data-mode="video"]::before {
  content: "请输入视频地址:";
}
.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
  content: "14px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
  content: "10px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
  content: "18px";
}
.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
  content: "32px";
}
.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
  content: "文本";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
  content: "标题1";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
  content: "标题2";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
  content: "标题3";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
  content: "标题4";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
  content: "标题5";
}
.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
  content: "标题6";
}
.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
  content: "标准字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
  content: "衬线字体";
}
.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
  content: "等宽字体";
}
</style>
